(1) Noel + Cousins would be one heck of a combo to build around.
(2) Noel + Rondo would be one heck of a combo to build around.
(3) Cousins + Rondo would be one heck of a combo to build around.
Sacramento would be sitting pretty no matter which of the three options they choose. Draft Noel and play Cousins and Noel alongside one another. Or trade for Rondo and couple him with either Cousins or Noel.
Sacramento are one of those teams that have enough talent already in place for it to make sense to pursue a guy like Rondo. They'd have a second young star, a big man, to pair with Rondo. Some talented two guards in Tyreke (S+T option) and Marcus Thornton. A couple of young role players like Isiah Thomas, Jason Thompson, Patrick Patterson.
Their GM, Geoff Petrie, has said that they are looking for someone like Rondo. A young veteran with experience who has already shown he can play. Someone who can come in like Chris Webber did 15 years ago and turn their team around. So yeah, I think the Kings would have interest in this type of a swap. So long as their new ownership doesn't fire their front office or tie their hands.